Bump minimum CMake version, related clean up

CMakeLists.txt

@@ -1,6 +1,5 @@
-cmake_minimum_required (VERSION 2.8.5)
-project (sensei-raw-ctl C)
-set (project_VERSION "1.0")
+cmake_minimum_required (VERSION 3.0)
+project (sensei-raw-ctl VERSION 1.0 LANGUAGES C)
 
 find_package (PkgConfig REQUIRED)
 pkg_check_modules (dependencies REQUIRED libusb-1.0)
@@ -51,7 +50,7 @@ if (BUILD_GUI)
 	target_link_libraries (${PROJECT_NAME}-gui ${gtk3_LIBRARIES})
 	install (TARGETS ${PROJECT_NAME}-gui
 		DESTINATION ${CMAKE_INSTALL_BINDIR})
-endif (BUILD_GUI)
+endif ()
 
 find_program (HELP2MAN_EXECUTABLE help2man)
 if (NOT HELP2MAN_EXECUTABLE)
@@ -77,18 +76,17 @@ foreach (page ${project_MAN_PAGES})
 endforeach ()
 
 set (CPACK_PACKAGE_DESCRIPTION_SUMMARY "SteelSeries Sensei Raw control utility")
-set (CPACK_PACKAGE_VERSION ${project_VERSION})
 set (CPACK_PACKAGE_VENDOR "Premysl Eric Janouch")
 set (CPACK_PACKAGE_CONTACT "Přemysl Eric Janouch <p@janouch.name>")
 set (CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/LICENSE")
 
 set (CPACK_GENERATOR "TGZ;ZIP")
 set (CPACK_PACKAGE_FILE_NAME
-	"${PROJECT_NAME}-${project_VERSION}-${CMAKE_SYSTEM_NAME}-${CMAKE_SYSTEM_PROCESSOR}")
+	"${PROJECT_NAME}-${PROJECT_VERSION}-${CMAKE_SYSTEM_NAME}-${CMAKE_SYSTEM_PROCESSOR}")
 
 set (CPACK_SOURCE_GENERATOR "TGZ;ZIP")
 set (CPACK_SOURCE_IGNORE_FILES "/\\\\.git;/build;/CMakeLists.txt.user")
-set (CPACK_SOURCE_PACKAGE_FILE_NAME "${PROJECT_NAME}-${project_VERSION}")
+set (CPACK_SOURCE_PACKAGE_FILE_NAME "${PROJECT_NAME}-${PROJECT_VERSION}")
 
 set (CPACK_SET_DESTDIR TRUE)
 include (CPack)

README.adoc

@@ -28,7 +28,7 @@ a package with the latest development version from Archlinux's AUR.
 
 Installation
 ------------
-Build dependencies: cmake >= 2.8.5, help2man +
+Build dependencies: cmake >= 3.0, help2man +
 Runtime dependencies: libusb >= 1.0, gtk+ >= 3.0 (optional)
 
  $ git clone https://git.janouch.name/p/sensei-raw-ctl.git
@@ -49,9 +49,6 @@ For Debian-based distros, you can do the following instead of the last step:
  $ cpack -G DEB
  # dpkg -i sensei-raw-ctl-*.deb
 
-Note that for versions of CMake before 2.8.9, you need to prefix `cpack` with
-`fakeroot` or file ownership will end up wrong.
-
 Contributing and Support
 ------------------------
 Use https://git.janouch.name/p/sensei-raw-ctl to report bugs, request features,

config.h.in

@@ -2,7 +2,7 @@
 #define CONFIG_H
 
 #define PROJECT_NAME "${CMAKE_PROJECT_NAME}"
-#define PROJECT_VERSION "${project_VERSION}"
+#define PROJECT_VERSION "${PROJECT_VERSION}"
 
 #cmakedefine DEVELOPER_MODE
 #ifdef DEVELOPER_MODE